Necticut



(No Model.) 2 Sheets-Sheet 1. L. J. ATWOOD & P. W. TOBEY.

ARGAND LAMP.

u 1 M 9 8 2 w I r w a M 0 t MOMOMOUO n 0M0M0 0 v e o o m m A t wowonowo a omowomom P 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O 0 0 0 0 o 0 0 0 0 0 0 0 o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 momowow 0 O M M M 0 0 O 0 w o? 11%0 0 l 1 5 8 oo 4 If m 40 0 m v m: unams PEYERS 0a., mow-mum, msnmsmn, n. c.

(No Model.) 2 Sheets-Sheet 2. L.-J'. ATWOOD 8c FLW. TOBEY.

ARGAND LAMP.

No. 448,851. Patented Mar. 24, 1891.

LEIVIS J. ATWOOD AND FREDERICK \V. TOBEY, OFWVATERBURY, CON- NEOTICUT, ASSIGNORS TO THE PLUME & ATVOOD COMPANY, OF SAME PLACE.

MANUFACTURING ARGAN D LAM P.

SPECIFICATION forming part of Letters Patent No. 448,851, dated March 24, 1891.

pp c i filed July 6, 1889. Serial No. 316,661. (No model.)

To aZZ whom, it may concern.-

Be it known that we, LEWIS J. .Arwoon and FREDERICK W. TOBEY, of Vaterbury, in the county of New Haven and State of Connecticut, have invented an Improvement in Argand Lamps, of which the following is a specification.

This invention is especially applicable to lamps in which a large and thick Argand wick is made use of. In this character of lamp difficulty has been experienced in raising and lowering the wick with uniformity, because the wick sometimes adheres to the exterior surface of the central air-tube, and this adhesion is increased by the twisting action upon the Wick consequent upon the rotation of the wick-raising nut, to which the lower end of the wickis fastened. In our present improvement we make use of claws extending upwardly from the wick-raiser and passing into the wick in such a manner as to insure the proper rotation of the wick throughout its length around the central air-tube when raising or lowering such wick, and we make use of a peculiarly-constructed wick-tube outside the wick and within the reservoir, which wicktube is slotted, and a surrounding capillary wick is fastened to the wicletube around the slotted portion, so that the upper portion of the capillary wick is pressed through the slots in the wick-tube and comes into contact with the wick that is being burned, whether such wick is of full length or has been consumed to a greater or less extent, and we provide a peculiarly-constructed central air-tube and a flame-spreader and air-distributor made with reference to insuring a uniform action of the air within the flame and for preventing the flame being influenced by gases arising from the heat of the central air-tube orother parts of the lamp.

In the drawings, Figure 1 is a vertical section of the lamp complete. Fig. 2 is a detached view of the wick-raiser and the swinging claws. Fig. 3 is an elevation of a portion of the wick-tube, and Fig. 4 is a detached view of the deflector.

The reservoir or fountain A is of any ordinary or desired size and shape, and passing up centrally through the same is an air-tube B. This air-tube is made with a screw to act upon the wick-raiser O, the screw-thread being made in the sheet metal of the wick-tube or in any other convenient manner. The upper end of the air-tube Bis contracted to form 5 5 a cylinder of smaller size, as shown at 3, and there is a cylinder 4 slipped over the air-tube B and soldered or fastened thereto at its lower end, and the metal in this cylinder 4 is pressed back, as at 5, thereb perforating the cylinder 4 at 15, and at the same time forming inwardlybent projections 5, upon which the lower end of the removable perforated equalizerD rests. The lower portion of this equalizer D is cylindrical and fits the inside of the cylinder 4 moderately tight, so that any gases that may be formed within the annular cup at the upper end of the air-tube or within the air-tube itself cannot pass up between the equalizer D and the cylinder 4,but must pass up within such equalizer D and through the perforated upper portion thereof to the flame, and any oil that may pass from the Wick-tube E into the annular cup between the cylinder t and the contracted upper portion of the airtube B will pass through such cylinder at at the perforations 15 and return to the wick through the openings 16 in the lower part of the cylinder 4. The inwardly projecting tongues 5 support the lower end of the perforated equalizer D.

There have heretofore been perforated equalizers at the upper end of the air-tube and within the flame and deflectors connected with the upper ends of such equalizers proj ecting outwardly to. spread the same; but we have experienced difficulty in obtaining the necessary volume of air without raising the edge of the deflector too. high to adapt the flame to the ordinary chimney. To obviate 0 this difficulty we make the perforated portion of the equalizer D sufficiently high to obtain the necessary volume of air through the openings in such equalizer, and the deflector F is made conical around its edge, so that the por- 9 5 tion 6, that acts to deflect the air into the flame, is at the necessary height above the top of the air-tube and wick; but the air can pass freely from the upper perforations of the equalizer beneath the concave portion and out into the flame below the edge 6.

Vithin the perforated equalizer D is a conical perforated distributer G, having an open upper end at 7, and the perforations in this conical distributer G are preferably larger than those in the equalizer D,and they serve to render the current of air ascending through the air-tube uniform in its action all around within the flame, and at the same time the upper end of the distributer G being open the current of air is not obstructed nor its volume lessened.

Around the base of the wick-raiser C is a projecting ledge 8, upon which the lower end of the wick rests, and a hanging flange, with a projection or lug 9 passing into a vertical slot in the outer wick-tube H, and this wicktube I-l extends up to thetop of the wick and is provided with a chimney-holder K, of any ordinary or desired character, around its upper end. The one represented in the drawings is removable from the wick-tube, and thereis a flange 10 around the wick-tube, closing the upper end or opening of the reservoirA, and in this wick-tube H are slots at 11, and there is a capillary wick L around the outside of this wick-tube H, and this is bound to the wick-tube by a wire or cord, so that the upper edges of the wick L are pressed through the slots 11 and come in contact with the wick E and supply oil to the same, whether said wick E is of full length or not,

Around the edge of the ledge 8 thereare springclaws 10 extending vertically. \Ve prefer to use three of these, and they are connected at their lower ends to such ledge 8, preferably by hinges, as-shown, so that such claws can be sprung or swung outwardly to 'allow for the insertion of the wick E with facility, and when these spring-claws 16 are closed up around the wick the projecting points of such spring-claws stick into the wick and hold the same, after which the wick-tube II is passed down over the wick and outside of the spring-claws to hold the same in position. Hence when the wick-tube H is rotated by turning the chimney-holder K or flange 10 the wick-raiser C is revolved and the screwthread in or upon the air-tube B raises or lowers the wick and raiser C, as usual, and the claws 16, extending up the wick, insure the rotation of the wick throughout its length around the air-tube and compel it to move up or down with uniformity.

In our application, Serial No. 332,207, filed December 2, 1889, the upper endof the air-tube is contracted and receives a separate tubular thimble, with a cup at the upper end, and the base of the internal air-distributer passes down within the cup of the cylindrical thimble, and the present invention is to be distinguished from that in the said application, as in the present invention there is no cup at the upper end of the cylindrical thimble.

Ve claim as our invention- 1. The combination,with the air-tube B, contracted atits upper end, of the cylinder 4, fastened at its lower end to the air-tube and forming a continuation of the same and having inwardly-projecting tongues 5, the perforations 15 in said cylinder, the perforated equalizer fitting inside the cylinder 4 and resting upon the tongues, and a deflector or flame-spreader having a conical rim that descends around the upper end of such perforated equalizer, substantially as set forth.

2. The combination, with the air-tube, of the perforated equalizer forming a continuation of the air-tube, and the deflector F, attached to the equalizer and having a conical rim that descends around the upper portion of the perforated equalizer to spread the flame and insure the proper supply of air within the same, substantially as set forth.

3. The combination, with the cylindrical perforated equalizer having a deflector at the upper end with a conical downwardly-projecting rim, of the conical perforated distributer G within the equalizer and having an open upper end, substantially as and for the purposes set forth.

4. The combination, with the air-tube and the wick-tube outside the wick, of a wick-rais ing thimble moving spirally on the air-tube and within the wick and upon which the lower end of the wick is received, and two or more equidistant sheetmetal strips connected at their lower ends to the wick-raiser and extending up around the wick and held thereto by the wick-tube and having claws that penetrate the wick, whereby the move mentgiven to the wick-raiser is transmitted equally to all parts of the wick, substantially as specified.

5. The combination, with the wick-raiser having a projection and the central air-tube having ascrew to act upon the wick-raiser, of the wicktube surrounding the wick and adapted to be rotated and having a slot for the projection on the wick-raiser and slots through the same near the upper end, and a capillary wick permanently fastened around the outside of the wick-tube atits upper end, so that the fibers of the wick are forced into the slots in the wick-tube and come into contact with the wick, substantially as set forth. Signed by us this 29th day of June, 1889.

LElVIS J. ATWOOD. FRED. \V. TOBEY.

\Vitnesses:

Row. '1. LATTIN, HESPER BEECHER. 

